Beyond in the stream is a corpse with a Homeward Bone and Soul of a Lost Undead, if you are confident in your jumping abilities, you can make the jump from the platform holding the chest. Past the bridge, going to the right leads to the Forest of Fallen Giants, while to the left you'll find two long planks to a large stone with a chest that contains a Human Effigy. The path opens up to a cave with a wooden bridge that spans a stream.
Pulling the lever to the right of the gate, opens it. Continue into the darkness, making a U-turn on the first right of the main path in, you'll find an iron chest (chest is a Mimic in NG+) with a Rusted Coin. Turn around and proceed down the hallway, to find a dead end to the right and to the left a large gated door. This leads down to an underground stone ramp-way. Starting at the Majula bonfire, facing the coast, you should notice a crumbled wall separating the hill and a big doorway, on the right if not, look for the torch sconce marking the entrance.